喷嘴距对水蒸汽喷射泵工作性能的影响分析  

Analysis on the Influence of Nozzle Distance on Performance of Steam Ejector Pump

作　　者：林丽生[1] 廖国进[2] 

机构地区：[1]湄洲湾职业技术学院机械工程系,福建莆田351254 [2]辽宁工业大学机械工程与自动化学院,辽宁锦州121001

出　　处：《长春大学学报》2014年第8期1043-1047,1056,共6页Journal of Changchun University

摘　　要：利用流体力学计算软件FLUENT对水蒸汽喷射泵的工作性能进行数值模拟,通过合理的模型假设与简化,对计算模型进行网格划分与求解,从而得到水蒸汽喷射泵的内部流体流动形态和引射系数。保持工作参数和其它几何参数不变,仅改变喷嘴距的大小,模拟计算出水蒸汽喷射泵在不同喷嘴距下的引射系数,根据引射系数和内部流场的变化情况,分析其影响规律,从而找出较好的喷嘴距取值范围。In this paper, a numerical simulation on the performance of steam ejector pump is made by fluid dynamics software FLU-ENT. Through reasonable assumptions and model simplification, the calculation model is meshed and solved. The inside fluid flow pat-tern of steam ejector pump is obtained and the entrainment ratio is calculated. Maintaining the operating parameters and other geomet-rical parameters constant, it calculates the entrainment ratio of all steam ejector pumps in different distances only by changing the dis-tance between nozzles. According to the changes of entrainment ratio and inside fluid flow pattern, it analyzes the impact of the nozzle distance and finds out a better range of the nozzle distance.

关 键 词：水蒸汽喷射泵 FLUENT 数值模拟 喷嘴距 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]